Patent GB-174348-A (GB)
Title: Improvements in or relating to rotary printing presses
IPC: B41F13/54
Filed: 1922-01-17
Abstract: 174,348. Goldschmidt, H. May 17, 1915, [Convention date]. Rotary machines.-A rotary newspaper machine for printing duplicate copies from webs of double width is constructed of two similar printing sets A, B, Fig. 2, with the corresponding rollers arranged coaxially or parallel to one another. The webs, after being perfected, are slit and turned by bars and directed to folding devices p, y arranged side by side and situated laterally with regard to and between the sections A, B. Each of the printing-couples C, D comprises a printing-roller (not shown) with which coact two impression rollers c, d; e, f, The web from a roll g is printed on one side by the couple C, and perfected by the couple D, and another web (not shown) is first printed by the couple O and then perfected by the couple C. The Specification as open to inspection under Sect. 91 (3) (a) comprises also other forms of machines for printing from webs of a multiple width comprising combinations of perfecting sets, each set consisting of two multi-width printing cylinders with each of which coact several impression cylinders, the arrangement being such that each wide web after printing is slit into two or more webs which are associated together before passing to a folding device which folds them longitudinally. As shown in Fig. 1 (Cancelled), the machine comprises four perfecting sets each comprising a pair of printing-cylinders a, band coating impression cylinders c - - f. The printing cylinders are of a length equal to four times the breadth of the newspaper to be printed, so that each cylinder prints eight pages per revolution on two webs which are supplied from rolls q, g. These webs are perfected by the printing- cylinder b with which coact two impression cylinders e, f, so that in all two sixteen page products are obtained from each perfecting set. The webs, after being perfected, are cut by rotary slitters, passed over turning bars arranged at an angle of 45‹ to the original direction of the web, which bring the two webs of each wide web together and the associated webs are passed to folders p-y, of which there are four sets in pairs in axial alignment. As shown, the lower pair of folders are arranged vertically below the upper pair, the folders being symmetrical with the printing sets but not in the lines of run of the original webs. The webs can be associated so that a paper of thirty-two pages is associated on each folder, there being four papers of thirty-two pages in all; or so that two papers of sixty-four pages are produced, or with two papers of combinations from thirty-four to sixty-four pages. Before passing to the folders, the webs pass over rollers z of double the width of the slit webs, so that two sets of webs can pass over each roller. In a modified form, the invention is applied to a machine in which the web printed on is six pages wide, and two perfecting sets of this width are arranged end-on and the folders are arranged between the printing sets. Such a machine has a capacity per revolution of four papers of twenty-four pages, or two papers of forty-eight or lower number of pages. This subject-matter does not appear in the Specification as accepted.